--- drivers/net/pppol2tp.c

+++ drivers/net/pppol2tp.c

@@ -756,6 +756,7 @@ static int pppol2tp_recv_core(struct soc

/* Try to dequeue as many skbs from reorder_q as we can. */

pppol2tp_recv_dequeue(session);

+ sock_put(sock);

return 0;

@@ -772,6 +773,7 @@ discard_bad_csum:

UDP_INC_STATS_USER(&init_net, UDP_MIB_INERRORS, 0);

tunnel->stats.rx_errors++;

kfree_skb(skb);

+ sock_put(sock);

return 0;

@@ -1658,6 +1660,7 @@ static int pppol2tp_connect(struct socke

if (tunnel_sock == NULL)

goto end;

+ sock_hold(tunnel_sock);

tunnel = tunnel_sock->sk_user_data;

} else {

tunnel = pppol2tp_tunnel_find(sock_net(sk), sp->pppol2tp.s_tunnel);